參數(shù)資料
型號(hào): ISL8009
廠商: Intersil Corporation
英文描述: 1.5A Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator(1.5A低靜態(tài)電流,1.6MHz高效同步降壓調(diào)節(jié)器)
中文描述: 1.5A的低靜態(tài)電流1.6MHz的高效率同步降壓穩(wěn)壓器(1.5A的低靜態(tài)電流,1.6MHz的高效同步降壓調(diào)節(jié)器)
文件頁(yè)數(shù): 12/13頁(yè)
文件大?。?/td> 763K
代理商: ISL8009
12
FN6441.0
July 11, 2007
Output Voltage Setting Resistor Selection
The resistors R
2
and R
3
shown in Figure 29 set the output
voltage for the adjustable version. The output voltage can be
calculated by Equation 2:
where the 0.8V is the reference voltage.
The voltage divider consists of R
2
and R
3
and increases the
quiescent current by VO/(R
2
+ R
3
), so larger resistance is
desirable. On the other hand, the VFB pin has leakage
current that will cause error in the output voltage setting. The
leakage current has a typical value of 0.1μA. To minimize the
accuracy impact on the output voltage, select the R
3
no
larger than 200k
Ω
. For V
O
= 0.8V, it is recommended to
short R
2
and open R
3
.
Layout Recommendation
The layout is a very important converter design step to make
sure the designed converter works well. For the ISL8009
buck converter, the power loop is composed of the output
inductor L, the output capacitor C
OUT
, the LX pin and the
GND pin. It is necessary to make the power loop as small as
possible.
The heat of the IC is mainly dissipated through the thermal
pad. Maximizing the copper area connected to the thermal
pad is preferable. In addition, a solid ground plane is helpful
for EMI performance. It is recommended to add 5 vias under
the thermal pad connection to the solid ground plane.
V
O
0.8
1
R
2
R
3
------
+
=
(EQ. 2)
ISL8009
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISL8009A 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:1.5A Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator
ISL8009AEVAL1Z 功能描述:EVALUATION BOARD FOR ISL8009A RoHS:是 類(lèi)別:編程器,開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC(離線)SMPS 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC,步升 輸出及類(lèi)型:1,非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開(kāi)關(guān):3MHz 板類(lèi)型:完全填充 已供物品:板 已用 IC / 零件:MAX8969
ISL8009AIRZ-T 功能描述:IC REG BUCK SYNC ADJ 1.5A 8DFN RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:EZBuck™ 類(lèi)型:降壓(降壓) 輸出類(lèi)型:可調(diào)式 輸出數(shù):1 輸出電壓:0.8 V ~ 22.1 V 輸入電壓:3 V ~ 26 V PWM 型:電流模式 頻率 - 開(kāi)關(guān):1.5MHz 電流 - 輸出:1.8A 同步整流器:無(wú) 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-WFDFN 裸露焊盤(pán) 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:8-DFN(2x2) 其它名稱(chēng):785-1276-1
ISL8009AIRZ-T7A 功能描述:IC REG BUCK SYNC ADJ 1.5A 8DFN RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類(lèi)型:降壓(降壓) 輸出類(lèi)型:兩者兼有 輸出數(shù):1 輸出電壓:5V,1 V ~ 10 V 輸入電壓:3.5 V ~ 28 V PWM 型:電流模式 頻率 - 開(kāi)關(guān):220kHz ~ 1MHz 電流 - 輸出:600mA 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:表面貼裝 封裝/外殼:16-SSOP(0.154",3.90mm 寬) 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:16-QSOP
ISL8009AIRZ-TK 功能描述:IC REG BUCK SYNC ADJ 1.5A 8DFN RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類(lèi)型:降壓(降壓) 輸出類(lèi)型:兩者兼有 輸出數(shù):1 輸出電壓:5V,1 V ~ 10 V 輸入電壓:3.5 V ~ 28 V PWM 型:電流模式 頻率 - 開(kāi)關(guān):220kHz ~ 1MHz 電流 - 輸出:600mA 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:表面貼裝 封裝/外殼:16-SSOP(0.154",3.90mm 寬) 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:16-QSOP